摘要:
Distribution of content stored on read only media, and a system and method by which a consumer who purchased content stored on read only media implements a process in the field by which they alter the storage media. A system and tools are used by the consumer to identify, authenticate, disable, and confirm alteration in exchange for compensation, the acquisition of new usage rights to content, or the ability to restore access to or copy content to new media. The process may be conducted by the consumer in the field without assistance and or visual inspection, or be partially conducted in conjunction with an authorized intermediary. Furthermore, the process may restore access to content stored on new media without the need to transfer copies of content.
摘要:
When the terminal device attempts to use a special content, which has an attribute including information distinguishing the special content from regular contents and is stored in the recording medium device, the recording medium device refers to the revocation information indicating terminal devices restricted from using the special content. When the recording medium device determines the terminal device as a terminal device to be restricted from using the special content based on the terminal identifying information of the terminal device, the usage information output unit of the recording medium device does not transmit the necessary information for using the special content to the terminal device.
摘要:
A system, method and computer program product for a digital content player having a DRM agent to perform rights management operations on a digital content package, including loading rights management instructions to be executed by the digital content player, the rights management instructions being associated with the digital content package, executing the rights management instructions on the digital content player, and loading supporting licenses associated with the digital content package for processing by the DRM agent. The DRM agent deciding whether to permit the rights management operations requested by the rights management instructions. Further exemplary embodiments include systems, methods and computer program products for associating usage rights with digital content packages, managing of digital rights tokens, managing of digital content packages having predetermined broadcast dates, preserving of usage rights when content is transferred between DRM environments, and distributing content packages.
摘要:
There are provided an information recording medium, an information processing apparatus, an information processing method, and a computer program, which can realize users' convenience for using content in accordance with a license and copyright protection. An information recording medium stores an encrypted content file including encrypted content, usage right information of the encrypted content, and encryption key information necessary for a decrypting process for the encrypted content. Thus, a user can acquire a license (usage right information) and key information necessary for decryption of the content, together with the content, from the information recording medium, without acquiring the license (usage rights) by connection to a license provider. Therefore, it is no longer necessary to perform a process of acquiring the license (usage rights) from the license provider when the content is to be used, whereby user convenience is improved, and license-based content copyright management can also be ensured.
摘要:
A system for managing use of digital content within a trusted community. An access list defines the trusted community. License requests for use of content made from outside the trusted community are handled in accordance with a license request policy process.
摘要:
An information processing apparatus includes a data processing unit which executes processing for decoding and reproducing encrypted content. The data processing unit executes processing for determining whether the content can be reproduced by applying an encrypted content signature file. The encrypted content signature file stores information on issue date of the encrypted content signature file and an encrypted content signature issuer certificate with a public key of an encrypted content signature issuer. In determining whether the content can be reproduced, the data processing unit compares expiration date of the encrypted content signature issuer certificate with the information on issue date of the encrypted content signature file, and does not perform processing for decoding and reproducing the encrypted content when the expiration date is before the issue date, and performs the processing for decoding and reproducing the encrypted content only when the expiration date is not before the issue date.
摘要:
When the terminal device 500 attempts to use a special content, which has an attribute including information distinguishing the special content from regular contents and which is stored in the recording medium device 600, the recording medium device 600 refers to the revocation information indicating terminal devices restricted from using the special content. When the recording medium device 600 determines the terminal device 500 as a terminal device to be restricted from using the special content based on the terminal identifying information of the terminal device 500, the usage information output unit of the recording medium device 600 does not transmit the necessary information for using the special content to the terminal device 500.
摘要:
A product mark including a public key certificate issued with respect to an information-recording-medium manufacturing entity or information-recording-medium manufacturing equipment, and an encrypted volume ID calculated by computation based on a product-mark-associated value such as a hash value generated on the basis of the product mark, and a volume ID as an identifier set with respect to a given set of discs to be manufactured, are generated. The product mark and the encrypted volume ID are set as information for generating a key used for decryption of encrypted content, and recorded onto a disc by a reflective-film-removal recording method. Due to this configuration, the product mark and the encrypted volume ID as key generating information cannot be read from a pirated disc produced by physically copying a pit pattern on the basis of a legitimate commercial disc, thereby making it possible to prevent unauthorized reproduction or use of content.
摘要:
A method for preventing unauthorized installation of application software is disclosed wherein application software is distributed with a user-readable permanent password, one or more user-readable one-time disposable password, and a hidden password (hidden from users but accessible by the setup program). When the setup program is run, the user must enter the permanent password and disposable password(s). The setup program sends these passwords and the target computer serial number to a remote server which verifies their validity, stores the serial number, and returns a complex password and a new disposable password from a remote passwords folder stored on the remote server. The setup program displays the new disposable password to the user who records it for use in future installations. The complex password is used to enable installation of the software, and it is deleted after installation is complete. Subsequent installation or re-installations, if authorized by the terms of the software license agreement, are performed using the same procedure, except that for each such installation, a new disposable password must be used.
摘要:
A method for copy protection in which an audiovisual or audio data is divided into a plurality of portions. The plurality of portions is at least partly scrambled and prepared so as to be stored on a record carrier in the scrambled order. This is done so that a physical position on the record carrier, e.g., a sector of the record carrier, where a respective portions of the divided data is stored depends on the scrambled order.